Dhollandia DH-L Series Installation guide

DHOLLANDIA

1

DHOLLANDIA n.v.

HQ office, Belgium

Zoomstraat 9

9160 Lokeren

Tel : +32 (0)9 349 06 92

[email protected]

Doc: FIT-LM30-EN-2015-rev 1 • Rev NR : 1 • Date : 09/2016

Explore the world of DHOLLANDIA liftgates at: www.dhollandia.com

INSTALLATION MANUAL

DH-L* 1500 - 3000 kg

DHOLLANDIA

2

MAIN ITEMS ANNEXES

1 Introduction & Disclaimer 3

2 Operating safety precautions 4

3 Installation safety precautions 5

4 Liftgate terminology 6

5 Installation parameters terminology 7

6 Getting started … 9

7 Installation dimensions 11

8 Methods to mount lift frame 14

§8.1 Method with fitting jigs 15

§8.2 Method with vertical platform 16

§8.3 Impact of rubber platform seals 17

§8.4 Method with horizontal platform 17

9 Mounting of the lift frame under chassis 19

§9.1 Positioning of the lift frame 19

§9.2 Fixation of the mounting plates 20

§9.3 Additional remarks for heavy-duty lifts and very long

platforms 24

§9.4 Notes for I-beam chassis (trailers and semi-trailers) 25

§9.5 General remark 25

§9.6 RUPD and towing hitches 26

10 Mounting of platform 28

11 Other mechanical works 30

§11.1 End stops for work position of platform 30

§11.2 Platform stow position 31

§11.3 Installation of the RUPD 33

12 Electrical installation 34

§12.1 Installation of main control box 34

§12.2 Optional mounting brackets 35

§12.3 Installation of extra controls 35

13 Putting the liftgate into service 36

14 Lubrication instructions 38

15 Quality control and PDI 39

A1 Prescribed tightening torques for bolts in N.m 41

A2 Safety & warning signs 42

A3 Grease plans 44

A4 Towing hitch assembly 46

A5 Electric and hydraulic diagrams 49

This publication, or parts thereof, may not be reproduced or transmitted in any form or by any means, electronically

or physically, for any purpose without the express written authorization of DHOLLANDIA NV

DHOLLANDIA

3

1– INTRODUCTION & DISCLAIMER

• This manual provides you with the information necessary for the installation of the

DHOLLANDIA DH-L* cantilever liftgates 1500-3000 kg.

• It provides you with general instructions applicable to the common truck and trailer types. It

might be possible that specific issues particular to your installation case are not, or not fully

covered by this manual. In case of doubt, please contact your national DHOLLANDIA

distributor for further assistance.

• A proper installation is extremely important for maximum operational reliability and

durability of the liftgate, and more importantly to guarantee the safety of the operator, of

coincidental bystanders, and of the technical personnel taking care of maintenance and

repair.

• The illustrations and information contained in this manual are not contractually binding, an

cannot lead to any form of legal action against DHOLLANDIA. DHOLLANDIA

liftgates are constantly being adapted to new vehicle and chassis developments and

special customer requirements. DHOLLANDIA reserves the right to alter product

specifications without prior notice; such modifications might not have been included at the

time this manual was printed. It is the sole responsibility of the installer(s) to follow

shop best practices for safety and to use good common sense. If you require further

information or are unclear about ANY part of this installation, contact the national

DHOLLANDIA distributor for further guidance prior to continuing.

• SIGNS & SYMBOLS: This manual uses a generic internationally accepted signs, but also

purpose made signs. The meaning of these signs is explained in the annex to this manual.

Make sure you understand these signs prior to installation.

• Please take special notice of the following signs. They mark the likelihood and severity of a

potential injury if a person doesn’t follow the instructions contained on the safety sign.

Examples of generic,

internationally accepted signs

Examples of DHOLLANDIA

purpose made signs

DANGER : indicates an imminently hazardous situation

which, if not avoided, will result in death or serious injury.

[white letters on red background]

WARNING : indicates a potentially hazardous situation

which, if not avoided, could result in death or serious injury.

[black letters on orange background]

CAUTION : indicates a potentially hazardous situation

which, if not avoided, could result in minor or moderate

injury. [black letters on yellow background]

NOTICE : indicates a potentially hazardous situation which,

if not avoided, could result in property damage. [white letters

on blue background]

SAFETY INSTRUCTIONS : indicate general instructions

relative to safe work practices, reminders of proper safety

procedures, or the location of safety equipment. [white

letters on green background]

SAFETY

INSTRUCTIONS

NOTICE

• If unsure where you can reach your national DHOLLANDIA distributor,

consult the website for further reference:

www.dhollandia.com

DHOLLANDIA

4

2– OPERATING SAFETY PRECAUTIONS

• The operating safety instructions below only summarize the most important

requirements. Consult the user’s manual supplied with the liftgate, for an

overview of ALL applicable operating safety precautions.

• The operation of the liftgate should be restricted to one single operator.

• The operator should not stand behind, under or within reach of the platform while operating

the liftgate. Never operate the liftgate unless the area around the platform is clear of

obstacles and other persons.

• Operate the liftgate from a safe position at the side of the vehicle body, away from the

moving platform. Keep fingers, hands, arms, legs and feet clear of the moving parts of the

liftgate and the edges of the platform.

• When operating the liftgate from a position on the platform or inside the vehicle body,

make sure to keep your feet and legs, hand and arms clear of the inboard edge of the

platform. Keep a safe distance from the hazardous crushing area between the rising

platform and the rear edge of the vehicle floor or extension plate.

• Do not exceed the maximum rated capacity of the liftgate. Respect the loading diagrams.

• In an emergency situation, release the control switch to stop the liftgate. If the control box

is equipped with an emergency stop or main battery isolator switch, switch these off to cut

the electrical power.

• Ensure the liftgate is in stowed position when not in use. Extended platforms could create

a hazard for people and vehicles passing by.

• Never jump off a moving platform, or a platform at height.

• When walking on and off the platform, check for slippery surfaces to prevent injury by

slipping. Always wear professional safe footwear with a steel toe-cap and a good non-slip

sole. If the platform surface, or the working area around the platform is slippery because of

oil, grease, mud, dirt, snow, etc… DON’T use the liftgate but clean the platform or work

area first.

• When walking on and off the platform, pay attention to any protruding items to avoid injury

by tripping and falling (e.g. platform lights, levers for roll-stop systems, foreign objects on

the platform, etc…).

• In order to ensure the safety of the liftgate operators, or any coincidental

bystanders, the liftgates should only be used by skilled operators, who have

been duly trained, and understand all applicable safety precautions and the

operating instructions summarized in the user’s manual.

• Negligence can put the operator and third parties at great risk, and could result in

severe personal injury or death.

• In case of doubt, contact the national DHOLLANDIA distributor for further assistance.

DHOLLANDIA

5

3– INSTALLATION SAFETY PRECAUTIONS

• You must read and understand all safety and technical installation instructions

in this manual before starting any work on the liftgate. Then progress step by

step.

• Always wear appropriate working clothes. This comprises off: safety glasses with side

guards, or a wrap-around facial shield; steel toe safety shoes; fire-resistant overalls;

protective gloves; adequate ear protection; a safety helmet when working under the

vehicle chassis.

• Never wear loose-fitting clothes that may get trapped in the moving parts of the liftgate, or

in any machinery and tools used for the installation. Don’t wear rings, bracelets, necklaces,

watches etc...

• Always use the proper tool for the job. Repair or replace worn-out or damaged tools before

use.

• Pay special attention to the lifting devices (fork lifts, overhead cranes, hoists, chains or

straps…) used to raise and maneuver the liftgates, and for the clamping tools (C-clamps,

vices,…) used to fix the liftgate, its mounting plates and bed extension to the vehicle

chassis and box. Ensure these tools are appropriate for the job, and in good working

order.

• Place vehicle on a flat even ground, and chock the wheels so that it cannot move during

the installation process. In case of a motor vehicle, switch off the engine and engage the

parking brake before starting.

• Do not work underneath the liftgate, or within reach of the platform and the moving parts of

the liftgate, without properly securing and supporting the platform and the lift frame against

accidental falling by means of an overhead gantry crane and hoists, a fork lift or equivalent

means.

• Make sure the vehicle battery power is disconnected while installing the liftgate. Connect

the battery power to the liftgate only when the installation is completed, or as required in

the installation instructions.

• Except for the support channels of the braces of the side steps, which are normally welded

to the cross members of the auxiliary chassis, DHOLLANDIA liftgates are designed

as a bolt-on system, and don’t require any welding.

• Before welding, note that welding on galvanized parts releases hazardous

fumes. Provide adequate ventilation, and wear an appropriate respirator.

• Welding should be done by qualified personnel only, and only to the extent that such is not

prohibited by the vehicle manufacturer. Ensure that the battery and ground cables are

disconnected from the batteries, and that all vehicle electrical equipment is fully isolated

before welding.

• If for any reason, trouble-shooting and / or repair might be needed during the

installation process, first consult the safety instructions for repair and

maintenance in the user’s manual.

• In order to ensure the safety of the liftgate operators, any coincidental bystanders,

and technical personnel working on liftgates, installation, maintenance and repair

works must only be performed by skilled and authorised technicians, who have

been duly trained, and understand the content of the installation and the owner’s

manual, as well as all safety considerations involved in their job.

• Negligence can put the technical personnel, the operator and third parties at great risk,

and could result in severe personal injury or death.

• In case of doubt, contact the national DHOLLANDIA distributor for further assistance.

• Never modify DHOLLANDIA liftgates or their mounting plates, never deviate from the

described installation procedures without prior written consent by the manufacturer.

DHOLLANDIA

6

4– LIFTGATE TERMINOLOGY

1 Lift frame

2 Mounting plates L+R

3 Platform

4 Lift arms L+R

5 Lift cylinders L+R

6 Tilt cylinders L+R

7 Auto-tilt brackets L+R

8 Hydraulic pump unit

9 Rear underrun protection (RUP) L + M + R

Rear underrun protection device (RUPD) [*]

10 Control unit (depending on order)

[*] RUP / RUPD = official UN terminology

Fig. 4.1

1

2

3

4

5

6

7

8

9

10

DHOLLANDIA

7

5– INSTALLATION PARAMETERS TERMINOLOGY

larm Length of the lift arms [= Lift ARM length]

vfh max Max. height of vehicle bed (UNLOADED), applicable

for the given arm length [= Vehicle Floor Height]

vfh Actual height of vehicle bed (UNLOADED)

vfh min Min. height of vehicle bed (FULLY LOADED)

cth max Max. height from underside of chassis to top of the

vehicle bed, applicable for the given arm length [=

Chassis Total Height]

cth Actual height from underside of chassis to top of the

vehicle bed

mfc Mounting height of lift frame under the vehicle:

measured from the top of vehicle bed to the center

of the lift arm [= Mounting height Floor to Center of

lift arm]

mcg Mounting height of lift frame above the ground:

measured from the center of the lift arm to the

ground [= Mounting height Center of lift arm to

Ground]

mpg Ground clearance under liftgate [Mounting

clearance Plates to Ground]

lbup Horizontal dimension from rear of platform to rear of

RUPD [= Lift BUmper to rear of Platform]

lbug Vertical clearance of RUPD to ground [= Lift

BUmper to Ground]

pd [= Platform Depth]

pduf Section of the platform that protrudes below the

vehicle bed in closed position [= Platform Depth

Under Floor]

Fig. 5.1

DHOLLANDIA

8

Fig. 5.2

lof Required mounting space to end of lift frame [= Lift

Overhang to Frame]

lop Required mounting space to end of premounted

pump unit [= Lift Overhang to Pump unit]

lac Width of the lift arms [= Lift Arm Center]

chw Vehicle chassis width [= CHassis Width]

bwo min Min. body width with pump unit in premounted

position [= Body Width Outside]

bci Width of the mid panel [= Body Cut Inside]

bcw Width of the cut-outs for the lift arms and tilt

cylinders [= Body Cut Width]

bft Thickness of the rear cross member or sill of the

vehicle bed [= Body Floor Thickness]

blb Available mounting space for rear truck lights on

outside of the tilt cylinders [= Body Light Boxes]

lft Max. thickness of the rear cross member or sill of

the vehicle bed, in the maneuver zone bcw for the

lift arms and tilt cylinders [= Lift Floor Thickness]

DHOLLANDIA

9

6– GETTING STARTED...

• Vehicle manufactures may have issued important instructions on various aspects of the

liftgate installation, specific to the brand and type of chassis, such as welding instructions

(or prohibition to weld !); instructions on chassis drilling and bolt-on connections to the

chassis; recommendations on the use of hydraulic stabilizing legs; guidelines for the

battery and ground cable connections; fuses and other electrical interfaces; etc...

• Place vehicle on a flat even ground, and chock the wheels so that it cannot move during

the installation process. In case of a motor vehicle, switch off the engine and engage the

parking brake before starting.

• Verify the installation kit is complete, and that all parts needed to correctly fit the liftgate are

present.

• Compare the voltage of the vehicle batteries with the voltage of the hydraulic pump unit of

the liftgate.

• Compare the installation dimensions and maximum installation parameters indicated in the

installation drawing with the actual dimensions of the vehicle, to verify compliance. (See

next chapter).

• Verify that the vehicle chassis and body are strong enough to support the load and moment

created by the liftgate at maximum load. Refer to the Body Builder Guide (BBG) of the

vehicle manufacturer for specific details. Check the stability of the vehicle and the weight

over the axles with the addition of a liftgate loaded to maximum capacity. The weights

indicated in the technical documentation and price list are theoretical and approximate, and

may vary from one liftgate installation to another.

• Make sure that the body is accurately fitted to the vehicle chassis.

• Remove the battery clips from the batteries. If the vehicle is equipped with an ABS braking

system or other electronic devices, check OEM instructions how to proceed safely.

• Remove all objects that are mounted in the mounting space required by the liftgate (RUP,

spare wheel carrier, pallet racks, tool boxes, etc.). If necessary, consult with the OEM

vehicle manufacturer for replacement solutions (e.g. special spare wheel carriers, exhaust

pipe modifications, etc.).

• Finish the liftgate in compliance with applicable road legislation of the country where the

vehicle will be registered.

• When connecting hydraulic fittings, make sure that the connections are thoroughly clean,

and that you don’t contaminate the hydraulic oil.

• Grease all bearings and pins before putting the liftgate into service. It is recommended to

grease all articulation bearings before mounting the corresponding articulation pin.

• After installation, work through the pre-delivery inspection (PDI) checklist, verify all check

points with due diligence. Make sure the final inspection is signed off by an inspector who

is not part of the installation team. Fill-out and sign-off the Fitting Declaration included in

the user’s manual issued with each liftgate.

• Do not over-pressurize any liftgate functions (LIFT / LOWER / OPEN / CLOSE) before the

liftgate installation is fully finished.

• During installation and while testing, verify that the liftgate and its moving parts don’t

interfere with, or cause damage to the vehicle systems (e.g. to suspension, braking system,

hydraulic and electrical circuits, etc.).

NOTICE

• The installer must verify and ensure compatibility between the liftgate and the

vehicle.

• The installer must verify and ensure compliance with the installation instructions

issued by the vehicle and body manufacturer.

• Improper modifications to the vehicle chassis or body could cause serious mechanical

failure of the vehicle. The installer must ensure that modifications to the vehicle chassis

and / or body will not adversely affect their structural integrity.

• In the event instructions of vehicle manufacturer conflict with the installation instructions

issued by DHOLLANDIA (e.g. on fuse ratings, etc.), contact your national DHOLLANDIA

distributor for further assistance.

DHOLLANDIA

10

• Do not release the locking bolts of the auto-tilt

brackets on the lift frame before the liftgate

installation is fully finished.

M Fig. 6.1

DHOLLANDIA

11

7– INSTALLATION DIMENSIONS

• If an INSTALLATION DRAWING is available (via order

confirmation), this will provide you with the critical

installation dimensions that should be observed. [fig. 7.1].

• If no installation drawing is available, max. and min.

installation parameters can be retrieved from TECHNICAL

PRODUCT SUMMARIES [fig. 7.2], or from the PRODUCT

RANGE POCKET GUIDE [fig. 7.3];

• Compare the installation dimensions and maximum

installation parameters indicated in above mentioned

sources with the actual dimensions of the vehicle, to verify

compliance.

• Verify that the actual vehicle dimensions comply with the

max. vehicle bed height vfh max, and with the min. / max.

mounting heights mfc.

• Determine the applicable mounting height mfc. This

dimensions is given on the installation drawing, or can be

calculated as follows:

Fig. 7.1

Fig. 7.2

Fig. 7.3

vehicle bed height vfh - 140

2

mounting height mfc =

Fig. 7.4 EX.

Ex. For vehicle with 1250mm bed height:

Î Fitting height mfc = (1250-140)/2 = 555 mm

• You might want to deviate from the initial mounting height

mfc. Examples:

1. In order to increase the ground clearance mpg, you

could choose to fit liftgate higher above ground

2. In case of short mounting space lof / lop, you could

choose to fit liftgate lower to the ground

3. To comply with RUP regulations, you could choose to

fit liftgate higher above or lower to the ground.

larm

vmax

mfcmax.

mfcmin.

mcgmax.

lof

New

abbreviations

04/2016

DHOLLANDIA

12

NOTICE

• When changing the mounting height, ensure to stay

within the given ranges for the installation parameters

vfh, mfc and mcg [fig. 7.4].

• Mounting height mfc is measured from the top of the

vehicle bed to the centre of the lift arm articulation pin.

See Fig. 7.5 + 7.6 how this is measured for liftgates with

mechanical or hydraulic auto-tilt at ground level.

• When determining mounting height mfc, make sure the

height of the RUP complies with regulations.

Fig 7.5 Fig. 7.6

≠

H M

• Required mounting space lof / lop will vary in function of

arm length larm and chosen mounting height mfc. Refer to

sources mentioned above for values. [fig. 7.7].

EX.

Fig. 7.7

DHOLLANDIA

13

Fig 7.8

• The arm width lac and the position of the pump unit

determine the min. width of the vehicle body bwo min.

• The arm width lac further determines the width of the mid

panel bci, the position of the slots for the lift arms bcw, and

the available space for rear truck lights on the side of the

tilt cylinders blb. [fig. 7.8].

• The height of the rear cross member lft depends on the

mounting mfc, and the distance of the platform behind the

rear of the body. lft can be increased by mounting the

liftgate lower (higher mfc-value) or adding space between

the rear of the body and the platform [fig. 7.9].

• Refer to sources mentioned above for values. Modify the

rear part of the vehicle to suit the chosen mounting

parameters.

EX.

lft (1) < lft (2)

1 2

Fig 7.9 EX.

NOTICE

Where chassis beams, longs sills, the rear sill and other

steel chassis or body components have been cut, grinded,

drilled, etc…, the installer should apply adequate anti-

corrosive coating to protect the vehicle and body against

corrosion. Check, and make sure you comply with the

instructions of the vehicle manufacturer.

DHOLLANDIA

14

8– METHODS TO MOUNT LIFT FRAME

• There are 3 different methods to mount the frame of the

liftgate:

1. Using the fitting jigs [option OAM103]. This method is

universal, and can be used for situations where the

platform forms the rear closure of the body aperture

(without rear doors), or stands behind the vehicle

doors.

2. Using the platform lifted in vertical position. This

method is equivalent to previous one, with the

additional benefit that it allows to compensate the

platform position if the body is out of square.

3. Using the platform lifted in horizontal position. This

method is particularly suitable for factory built panel

vans, or for vehicles with barn doors (where the door

locks protrude beyond the rear cross member of the

vehicle bed).

• Methods 1 and 2 can only be used for STANDARD

platforms with a conventional rounded edge [ref. OAP310].

Platforms with extended edge [options OAP312, OAP313,

OAP407, etc.) require a special approach. Consult your

national DHOLLANDIA distributor for further

assistance.

DHOLLANDIA

15

Fig. 8.1.1

§8.1 - Method with fitting jigs

• Measure the outside width across the lift arms. This

dimension corresponds with the inside width needed

between the 2 fitting jigs.

• Mark the centre line of the vehicle on the rear cross

member of the vehicle bed, and position the 2 fitting jigs in

such a way that:

1. the distance between the 2 fitting jigs matches the

outside width across the lift arms, and

2. the distance from each fitting jig to the middle line is

equal, so that they are perfectly centred in the rear

body aperture [fig. 8.1.1].

• For half width platforms, position the fitting jigs in function

of the arm width lac, and the position that the half platform

requires in the rear body structure.

• Once the position of the fitting jigs is finalised and checked,

fasten them to the rear cross member of the vehicle bed by

means of bolts, clamps or spot welding [fig. 8.1.2 + 8.1.3].

• Ensure that the holes of the 2 fitting jigs are perfectly

aligned. To verify this, slide a round bar through the holes,

and to check alignment with the rear cross member of the

vehicle bed.

• If liftgate is mounted with a rubber seal kit between the

closed platform and vehicle body, the position of the fitting

jigs must be adjusted to suit the thickness of the sealing

rubbers [§8.3].

lac

Fig. 8.1.2 Fig. 8.1.3

DHOLLANDIA

16

Fig. 8.2.1

§8.2 - Method with vertical platform

• Spot weld or bolt 2 temporary mounting supports on the

rear cross member of the vehicle bed, at max. 200mm from

the outside of the body [fig. 8.2.1].

• The fixation of these temporary mounting supports should

be sufficient to carry the proper weight of the platform

during installation.

• Mount the supports at height pduf below the vehicle bed

[fig. 8.2.2]. Pduf is mentioned on the installation drawing, in

the technical product summaries, and in the product range

pocket guide.

• Next, raise the platform (by hoist, forklift, overhead gantry

crane,...), and position it onto the mounting supports.

The platform is very heavy! Handle with caution. If platform

is dropped, it may cause serious personal injury.

• Slide a spacer D = 5 mm between the platform and the rear

frame of the body. [fig. 8.2.2]

• Adjust and centre its position. Ensure platform stands

perfectly aligned in the rear frame of the body. [fig. 8.2.3]

• Fasten and secure the final position of the platform by

means of hoists, clamps, ... [fig. 8.2.1], in order to prevent

mounting errors, accidental fall and injury.

• If liftgate is mounted with a rubber seal kit between the

closed platform and vehicle body, the position of the

platform must be adjusted to suit the thickness of the

sealing rubbers [§8.3].

!

Fig. 8.2.2 Fig. 8.2.3

DHOLLANDIA

17

Fig. 8.3.1

§8.3 - Impact of rubber platform seals

• If liftgate is mounted with a rubber seal kit between the

closed platform and vehicle body (option OAT001-

OAT005), a spacer Q must be inserted between the sill of

the vehicle bed and the fitting jigs or platform.

!

Top &

side profile

Floor profile Q

27mm with jigs

32mm with platform

13mm with jigs

18mm with platform

Steel, alu or inox

ø15

Fig. 8.4.1

§8.4 - Method with horizontal platform

• This method is recommended only when the platform can’t

stand directly behind the rear frame of the body, or behind

the rear doors. E.g. cargo boxes with protruding door locks

[fig. 8.4.1].

• Problems and solutions for such cases are

described in separate document (available on

internet or from your national DHOLLANDIA

distributor [fig. 8.4.2]:

FIT-LM-container locks-yyyy-01-EN

Fig. 8.4.2

DHOLLANDIA

18

• Determine distance where platform should stop behind the

rear cross member of the vehicle bed. Prepare a

corresponding spacer to insert between the rear cross

member and platform during installation.

• Mount 2 strong tubes over the inboard platform edge [fig.

8.4.3]

• Position the platform with the 2 tubes on the vehicle bed.

Slide required spacer between the rear cross member of

the vehicle bed and the platform.

• Secure the platform safely (by means of hoist, overhead

gantry crane, forklift, lifting jack, etc.)

!

Fig. 8.4.3

The platform is very heavy! Handle with caution. If platform

is dropped, it may cause serious personal injury.

• Centre the platform. Verify it is laterally flush with the

vehicle bed, and parallel with its rear cross member.

• The gap between the rear cross member of the vehicle

bed and the inboard platform edge will need to be covered

by a bridge plate or other techniques [separate

instructions above under fig. 8.4.2].

DHOLLANDIA

19

9) MOUNTING OF THE LIFT FRAME UNDER THE CHASSIS

§9.1 - Positioning of the lift frame

• Position the lift frame on a wheeled jack (order code

M0025) [Fig. 9.1.1], or use a similar device to slide the

frame under the chassis of the vehicle.

• Slide the lift frame under chassis, and raise the lift arms to

the fitting jigs (or to articulation hands on platform).

• Slide the articulation pins through the fitting jigs (or platform

hands) and the articulations on the lift arm [fig. 9.1.2].

• Raise lift frame to the correct fitting height mfc. [fig. 9.1.3]

• While raising the lift frame, push centrally. Never apply

force at extremities of the lift frame to change or correct the

mounting position at one side only.

• Pivot the lift frame in the longitudinal axis of the vehicle, to

ensure that top surface of the lift frame is parallel to the

vehicle bed. [fig. 9.1.4]

• If it proves difficult to orient the lift frame correctly,

disconnect the forks of the lift cylinders from the lift arms,

so that the lift arms and lift frame can move freely. [fig.

9.1.3]

• In case of bolt-on mounting plates, fit the mounting plates

over the frame. Do not tighten the nuts at this stage.

• Ensure the lift frame is positioned conform

the mounting instructions indicated in the

installation drawing and manual, before

drilling or welding the mounting plates to the

chassis.

• It is not allowed to reduce the width of the

mounting plates without prior formal

authorization from DHOLLANDIA.

Fig. 9.1.1

!

Fig. 9.1.2

Fig. 9.1.3 Fig. 9.1.4

DHOLLANDIA

20

§9.2 - Fixation of the mounting plates

• Except lifts equipped with premounted mounting plates, the

mounting plates are designed as bolt-on system, both

where the plates are joined to the lift frame, as where they

are mounted to the vehicle chassis.

• If you intend to weld anyhow, note that liftgate might be

equipped with thermoplastic hydraulic hoses.

Fig. 9.2.1



NOTICE

• Liftgate might be equipped with thermoplastic hydraulic

hoses, that don’t endure welding spatters.

• If any welding works are done to the mounting plates, all

hoses must be adequately covered and protected, e.g. by

a leather welding blanket.

• When the hydraulic system is under pressure, failure to

protect the hoses could cause a flaming flash, and might

cause serious personal injury.

• Ensure that the lift frame is correctly centred under the

vehicle chassis and body. [fig. 9.2.1]

• Adjust the mounting plates to the width of the vehicle.

• Straighten the mounting plates, and make sure they stand

perpendicular to the lift frame. [fig. 9.2.1]

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